Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1993-10-26
1995-04-25
Gorgos, Kathryn
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204243R, 204 67, G25C 308
Patent
active
054095891
ABSTRACT:
A method of producing a component of an aluminium production cell made of a carbon-based composite material containing a refractory hard metal boride, carbide, oxide, nitride or combinations or mixtures thereof and aluminium as metal, alloy or as an aluminium compound, comprises firstly providing a reaction mixture of aluminium and precursors which react to form the refractory hard metal compound, and optional fillers and additives. The reaction mixture is mixed with particulate carbon in an amount of from 1 to 20 parts by weight of carbon for 1 part by weight of the reaction mixture; and with a colloidal binder containing at least one of colloidal silica, alumina, yttria, ceria, thoria, zirconia, magnesia, lithia, in an amount to fully wet the carbon particles. The resulting mixture is compacted and dried and heated to initiate reaction of the reaction mixture by self-propagating micropyretic reaction.
REFERENCES:
patent: 4650552 (1987-03-01), de Nora et al.
patent: 5143668 (1992-09-01), Hida
Cabot Corporation-CAB-O-SIL Untreated Fumed Silica Properties and Functions, 1978, pp. 1-40.
Gorgos Kathryn
Moltech Invent S.A.
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